Maximum Material Density at
Capacity
The density of the materials moved by the bucket
varies and, therefore, so does the amount of material
that the bucket can carry before reaching the
maximum load rating. The tables in
(page 18)
list the density of material that can be
carried, both heaped and struck (i.e., leveled off), in
the bucket. The table below lists common materials
and their densities.
To move the materials with densities greater than the
maximum allowed for the bucket, reduce the volume
of the material placed in the bucket.
Material Density
Material
Density (Approximate)
Caliche
1250 kg/m
3
(78 lb/ft
3
)
Clay:
Natural bed
Dry
Wet
With gravel, dry
With gravel, wet
1600 kg/m
3
(104 lb/ft
3
)
1480 kg/m
3
(93 lb/ft
3
)
1660 kg/m
3
(104 lb/ft
3
)
1420 kg/m
3
(89 lb/ft
3
)
1540 kg/m
3
(96 lb/ft
3
)
Coal:
Anthracite, broken
Bituminous, broken
1100 kg/m
3
(69 lb/ft
3
)
830 kg/m
3
(52 lb/ft
3
)
Earth:
Dry, packed
Wet, packed
Loam
1510 kg/m
3
(94 lb/ft
3
)
1600 kg/m
3
(100 lb/ft
3
)
1250 kg/m
3
(78 lb/ft
3
)
Granite, broken or large
crushed
1660 kg/m
3
(104 lb/ft
3
)
Gravel:
Dry
Pit run (graveled sand)
Dry, 13 to 51
mm (1/2 to 2 inch)
Wet, 13 to 51 mm (1/2
to 2 inch)
1510 kg/m
3
(94 lb/ft
3
)
1930 kg/m
3
(120 lb/ft
3
)
1690 kg/m
3
(106 lb/ft
3
)
2020 kg/m
3
(126 lb/ft
3
)
Limestone, broken or crushed
1540 kg/m
3
(96 lb/ft
3
)
Sand:
Dry
Wet
With gravel, dry
With gravel, wet
1420 kg/m
3
(89 lb/ft
3
)
1840 kg/m
3
(115 lb/ft
3
)
1720 kg/m
3
(107 lb/ft
3
)
2020 kg/m
3
(126 lb/ft
3
)
Sandstone, broken
1510 kg/m
3
(94 lb/ft
3
)
Shale
1250 kg/m
3
(78 lb/ft
3
)
Slag, broken
1750 kg/m
3
(109 lb/ft
3
)
Stone, crushed
1600 kg/m
3
(100 lb/ft
3
)
Topsoil
950 kg/m
3
(59 lb/ft
3
)
19
